import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;

class Student {

    //私有属性name
    private String name = "bit";
    //公有属性age
    public int age = 18;

    //不带参数的构造方法
    public Student() {
        System.out.println("Student()");
    }

    private Student(String name, int age) {
        this.name = name;
        this.age = age;
        System.out.println("Student(String,name)");
    }

    private void eat() {
        System.out.println("i am eat");
    }

    public void sleep() {
        System.out.println("i am pig");
    }

    private void function(String str) {
        System.out.println(str);
    }

    @Override
    public String toString() {
        return "Student{" + "name='" + name + '\'' + ", age=" + age + '}';
    }
}
public class Main {
    public static void main(String[] args) {
        Class<?> c2 = null;
        try {
            c2 =  Class.forName("src.Main");
            Student student1 = (Student) c2.newInstance();

            Constructor<?> constructor = c2.getDeclaredConstructor(String.class,int.class);
            constructor.setAccessible(true);
            Student student = (Student) constructor.newInstance("纹细纹",18);
            System.out.println(student);

        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        }

    }
   /* public static void main1(String[] args) {
        Student student = new Student();
        Class<?> c1 = student.getClass();
        Class<?> c2 = Student.class;
        try {
            Class.forName("src.Main");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        try {
            c2.newInstance();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
        try {
            Student student1 = (Student) c1.newInstance();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }*/
}
